style: use dynamic bmc button

OliverBooth/Pages/Donate.cshtml

@@ -1,4 +1,4 @@
-@page
+@page
 @{
     ViewData["Title"] = "Donate";
 }
@@ -26,9 +26,7 @@
 </p>
 
 <p>
-    <a href="https://www.buymeacoffee.com/oliverbooth" target="_blank">
-        <img src="https://cdn.buymeacoffee.com/buttons/v2/default-yellow.png" alt="Buy Me A Coffee" style="height: 60px !important;width: 217px !important;">
-    </a>
+    <script type="text/javascript" src="https://cdnjs.buymeacoffee.com/1.0.0/button.prod.min.js" data-name="bmc-button" data-slug="oliverbooth" data-color="#FFDD00" data-emoji="" data-font="Cookie" data-text="Buy me a coffee" data-outline-color="#000000" data-font-color="#000000" data-coffee-color="#ffffff"></script>
 </p>
 
 <p>I also accept cryptocurrency donations.</p>